Rains Effect on Pools

The rain in Florida has been torrential over this summer and you may be noticing that your pool looks a little more ragged than you’re used to. You may have started taking some things into your own hands like draining the pool a little to get it to the skimmer, or clean the filter to try and keep the flow up. Your pool company will undoubtedly appreciate this as they’re only at your home once a week and the rain could come harder the other six days and active homeowners are phenomenal assets to a pools health. That being said they may not have explained why your pool is looking tired so we talk about them here in this article. 


The rain does a few things that combined can wipe out a pool over a week long period. The overflow drops chlorine, stabilizer and salt levels while the wash-in brings algae from your screen and ground water from your surrounding yard. All of these have negative impacts that hit hard and fast.


The overflow problem completely wrecks most pools chemistry balance. As rain water fills the last few inches of the pool up to the deck level it dilutes the chlorine, salt and stabilizer levels. As you or your pool service company see the water become high we then all drain that water level back down to where it should be which is the correct thing to do to make sure the skimmers still work optimally. In doing this we are also directly dumping out the salt and stabilizer. In some cases we’ve seen stabilizer and salt levels halved and chlorine all gone. We always check all of our pools chemistry levels every visit, but a quick call or message before a scheduled arrival helps us out a lot with what to expect when we arrive.


Combined with overflow is wash-in. The two are complementary but overflow is only concerned with the water level and dilution of chemistry whereas wash-in is what that water brings and introduces into the pool, things like algae, ground water and phosphates. If your screen enclosure has not been cleaned for a long time there is almost definitely algae being brought into your pool by the rain, which means your chlorine is being eaten up by all this chlorine. Piling on top of that is the water getting into your pool that is running along the ground, bringing in contaminants like phosphate from your lawn and more organic matter further burning through the chlorine. 


Okay so theres a lot of problems the rain brings but how do we deal with it?


First is to clean the filter and baskets, to keep the pool water moving. Secondly we recommend adding liquid chlorine, even if you have a salt pool you need that extra chlorine boost. To cap it off you should add an algae destroyer, something like Mustard Eliminator Phosphate Remover or Algatech.